Micubiši Ki 46-III KAI [Dinah]

Brief history:
At a time when the Americans were preparing an air offensive on Japan (may 1944), there is a project that a simple modification of the rapid reconnaissance aircraft Ki-46-III gave rise to a heavy fighter. The new fighter was designed solely for combat čtyřmotorovými bombers. In the bow were built two cannons Him-5 and a little later the aircraft was supplemented by zavěsníky for anti-aircraft bombs (the Dan). This fighter version was identified in the system kitai Ki-46-IIIb (Otsu).
The designers and engineers, however, went in the development of on and so to hull, place the hull of the tank, built the shut-efficient semi-automatic cannon Ho-204, which shot diagonally vzhůri at an angle of 70°. Tray cannon had a capacity of 25 grenades, and the total was carried by the eight trays, a total of 200 shells. The exchange of tanks was in charge of the second member of the crew.
Editing was entrusted to a military arsenal in Tachikawě, fixed was about 15 aircraft. Because it was a major adjustment, was in the post-war litertuře referred to as the Ki-46-III KAI. In the current literature it is referred to as the Ki-46-III Otsu/Hei (キ46-III乙+丙).
Planning is also a variant with engines Ha-112-II Ru with the war, but the manufacture has not already taken place..

Here it is, beautifully visible is mainly a 30 mm cannon pointing obliquely upwards.

Side view and detail of the weapons storage.

and two more photos with nice shots of the installed cannons.